Sectional fuel distributor



Aug. 16, 1938. w. T. cAPPs SECTIONAL FUEL DISTRIBUTOR Filed April 10., 1935 INVENTOR Wishing-Z072 T (a ape N BY v ATTORNEY rug:

Patented Aug. 16, 1938 UNHED STATES SECTIONAL FUEL DISTRIBUTQR Washington .T. Capps, Baltimore, Md, assignor,

by mesne assignments, to Standard Stoker Company, Inc., (1922), New York, Y., a corporation of Delaware Application April 10, 1935, Serial No. 15,517

1 Claim.

This invention relates to improvements in sectional fuel distributors used with stokers and particularly to fuel distributors of the general type shown in my prior United States Letters Patent 1,875,216, dated August 30, 1932.

In the form of locomotive stokers to which this invention is particularly applicable, it is important that the fuel distributor member which is exposed to the intense heat of the firebox may bereadily removed from its operative relation with associated stoker parts whenever it becomes warped, or is otherwise made unfit for further service; at the same time, the fuel distributor member must be so related with asso ciated stoker parts that its position within the firebox will be maintained without danger of accidental displacement or by reason of uneven running of the locomotive such as may occur while stopping and starting trains, and especially over a rough roadbed.

Accordingly, it is the principal object of this invention to provide an improved attachment or connecting relation between a fuel distributor member and associated stoker parts.

It is a further object of this invention to provide a novel attachment or connecting relation between the parts of a sectional fuel distributor comprising separable front and rear sections, this connecting relation in its specific embodiment including a portion at an adjacent end of each section underlying the other section, thereby restraining downward movement of one section relative to the other, and means for restraining relative fore and aft movement betw en said sections.

More specifically, it is the object of this invention to provide the novel attachment or connecting relation between the lower front fuel deflecting section and the rearward tubular elemerit of a stoker fuel distributor member.

These and other objects and advantages will be apparent from the description of my invention and the accompanying drawing, wherein,

Fig. 1 is a vertical longitudinal sectional view of my improved stoker distributor with associated parts indicated by the dotted lines;

Fig. 2 is a side elevation of the stoker distributor according to my invention;

Fig. 3 is a sectional plan view of the structure shown in Fig. 2 taken on the line 33 thereof;

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 2 looking in the direction of the arrows;

Fig. 5 is a sectional View taken on the line 5-5 of Fig. 2 looking in the direction of the arrows; and

Fig. 6 is a fragmentary sectional view taken on the line 66 of Fig. 2.

Throughout the description and claims, the terms front and rear and similar terms are used relative to the passage of fuel through the distributor.

On the drawing, Ii] indicates a firebox comprising inner and outer sheets I l and I2, respectively, and between which extends a thimble l3 constituting a stoker. firing opening I4. At I5 is indicated a stokerconveyor which delivers fuel, such as coal, in front of the jet member Iii. The jet member I6 is arranged to issue blasts of pressure fluid against the fuel so delivered for projecting it through the distributor member D over the fuel supporting surface 46 thereof.

The distributor member ,D is connected to the stoker conduit i5 by means of a T head bolt I1 and intermediate its ends is supported from the thimble it by means of cap screws 18 threaded into the tubular element H of the stoker fuel distributor member. This tubular element l9 passes through the stoker firing opening l4 so that the forward end thereof is preferably within the firebox l0, and comprises the arcuate side walls 20, 2| and the flat top and bottom walls 22, 23, respectively. Extending upwardly from the upper side of the top wall 22, and at the forward end thereof, is a lug 24 which is engaged between the spaced ears 25 formed at the rearward end of the upper fuel deflector 26 which functions to prevent the upper stratum of fuel, as it is blasted through the tubular element [9, from being drawn upwardly into the firebox and through the flues by the locomotive draft. A pin 21 passing into the ears 25 and through the lug 24 prevents movement of said upper fuel deflector 26 in a forward direction with reference to said tubular element iii. At each side of the upper fuel deflector 26 a stop 28 is provided, each stop contacting the forward edge 29 of a respective arcuate side wall 281, 2! for restraining down-- ward swinging movement of the deflector 26 with reference to the tubular member H9. The deflector 26 at its upper side is adequately ribbed as at 30 in order to prevent warping or sagging thereof due to the intense heat within the firebox.

The attachment or connecting relation between the tubular element is and the lower fuel deflector 3| is a novel one and will now be described in detailv Considered broadly, the de flector 3| and the tubular element H] are each a separable section or portion of a sectional distributor in which the tubular element or rear section 9 is carried by the stoker conveyor while the deflector 3| or front section, which is within the firebox and therefore must be frequently renewed, is carried by and supported from the tubular element or rear section I9.

In detail, the aforesaid connecting relation between the front and rear sections is attained by providing a recess 32 in the forward end of the bottom wall 23 of the tubular element l9; at each side of the recess 32 and below the fuel supporting surface 46 of the distributor member D is a ledge 33 upon which is seated the rearward portion 34 of the distributor member 3| The distributor member 3| is formed so as to direct laterally fuel which is propelled in a generally forward direction by the jet member l6.

Centrally of the distributor member 3| and depending from the under side thereof is the lug 35 which has a rearward extension 36 disposed below the upper surface of said rearward portion 34. The lug 35 is disposed between the ledges 33, and its rearward extension 36 fits between spaced fianges 3 1, 38 depending from the under side of the bottom wall 23 of the tubular element I9. At their forward ends, the flanges 31, 38 merge into the ledges 33 and are connected at their rearward ends by a bridge wall 39, thereby assuring a firm construction which is not liable to warp or spread under the intense firebox heat.

Thus, it will be apparent that the ledges 33 of the tubular element l9 underlie the rearward portion 34 of the distributor member 3| while the rearward extension 36 of the latter underlies the bottom wall 23 of the former. Lateral movement of the distributor member 3| with reference to the tubular element H! is restrained by reason of the lug 35 which fits closely between the inner sides of the ledges 33 and depending flanges 31, 38. Movement of the distributor member 3| in a forward direction with reference to said tubular element is prevented by passing a pin 40 transversely of the distributor member D so that it passes into the ledges 33 and through the lug 35 below the fuel supporting surface 46.

From the foregoing description, it will be clear that the distributor member 3| of my invention is held firmly by the tubular element I9 so that it cannot fall onto the firebed under severe locomotive operating conditions; at the same time, the connection between the distributor member 3| and the tubular element I9 is such that upon removal of the pin 40 the member 3| may be removed from the tubular element l9 by a forward movement.

I claim:

In combination with a furnace having an upright wall provided with an opening therein, a stoker for feeding fuel to said furnace comprsing a distributor member extending, from a point rearward of said upright Wall, through said opening to a point within said furnace, said distributor member having a fuel supporting surface arranged to permit fuel to pass thereover for distribution over a fire and comprising a rear section and a front section separable from said rear section, said rear section having a ledge disposed forward of said upright wall and underlying said front section below the fuel supporting surface thereof, and a pair of spaced flanges depending from the under side of said rear section, a lug formed with the under side of said front section and having a rearward extension, said lug and extension fitting between said spaced flanges, and said extension underlying said rear section, and means beneath said ledge extending into said front and rear sections below their fuel supporting surfaces for restraining said sections against relative fore and aft movement.

WASHINGTON T. CAPPS. 

